title: Assessing and classifying plant-related ecological risk under water management scenarios in China's Yellow River Delta Wetlands.
abstract: The Yellow River Delta is one of the most vigorous delta areas in the world. The wetlands in this delta are ecologically important due to their hydrologic attributes and their role as ecotones between terrestrial and aquatic ecosystems. In recent years, the Yellow River Delta Wetlands have gradually shrunk and degraded due to inadequate environmental flows. Water managers have attempted to balance the needs of the environment with the need to protect water supplies for agriculture and urban needs. Despite the need for environmental protection, a broad-scale, integrated way to characterize the degree of ecological stress in the wetlands has been lacking to date. To provide a framework for evaluating various potential water regimes, we developed a model that can be used to estimate the ecological risk for wetland plants, and used the model to determine the degree of ecological risk for different soil moisture conditions based on an ecological value at risk model that we developed and the fuzzy clustering method. The results revealed the spatial distribution of areas with high, medium, or low risks associated with water stress in the study area. These results can serve as a preliminary template to guide managers in their evaluation of water stress-related risk.
authors.affiliation: State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 9 Xinjiekouwai Street, Haidian District, Beijing, China. Electronic address: zfyang@bnu.edu.cn.
authors.forename: Zhifeng
authors.initials: Z
authors.lastname: Yang
authors.forename: Yan
authors.initials: Y
authors.lastname: Qin
authors.forename: Wei
authors.initials: W
authors.lastname: Yang
mesh_terms: D044822:Biodiversity; D002681:China; D003247:Conservation of Natural Resources; D055864:Droughts; D055868:Floods; D008390:Markov Chains; D008962:Models, Theoretical; D009010:Monte Carlo Method; D018570:Risk Assessment; D060753:Water Quality; D053833:Wetlands
keywords: Ecological risk; Ecological value at risk; Fuzzy clustering method; Water management scenarios; Yellow River Delta Wetlands